Physician Assistant - Medical. Assesses, plans and provides patient care under the supervision of a physician. Examines patient, performs comprehensive physical examinations, and compiles patient medical data, including health history and results of physical examination. May require a master's degree and must be a graduate of an accredited physician assistant program.
How much land does it take to support a human being? Boundaries of China superimposed upon those of the USA. Let's do the math again, but this time for the entire planet. The total land surface area of Earth is about 57,308,738 square miles, of which about 33% is desert and about 24% is mountainous. Subtracting this uninhabitable 57% (32,665,981 mi2) from the total land area leaves 24,642,757 square miles or 15.77 billion acres of habitable land.
Cropland-About 349 million acres in the U.S. are planted for crops. This is the equivalent of about four states the size of Montana. Four crops -- feeder corn (80 million acres), soybeans (75 million acres), alfalfa hay (61 million acres) and wheat (62 million acres) -- make up 80 percent of total crop acreage.To order, call 1-800-9996779). The numbers do not change appreciably from year to year. Overview of Land Use in the United States-The U.S. has 2.3 billion acres of land. However, 375 million acres are in Alaska and not suitable for agricultural production.